Free API developer tools
Small, fast utilities for everyday API work — convert a curl command to code, decode a JWT, or turn a JSON sample into a JSON Schema. No sign-up needed.
Runs in your browser — nothing you paste is sent to a server.
Curl to code converter
Paste a curl command — from your browser’s dev tools, an API reference or a teammate — and get the same request as Python, JavaScript, Go, Java, PHP, C# and more.
Open tool →JWT decoder
Paste a JSON Web Token to read its header and claims, with exp, iat and nbf shown as dates so you can see at a glance whether it has expired.
Open tool →JSON to JSON Schema generator
Paste a JSON sample, such as an API response, and get a JSON Schema that describes it — nested objects, arrays, required fields and common string formats.
Open tool →Save requests, run tests and publish docs
apikumo keeps your requests in collections, runs them as test suites and publishes them as hosted docs — free for up to 3 members.
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